CN102494920A - Method and device for acquiring deposition layer section of hydraulic test tank - Google Patents
Method and device for acquiring deposition layer section of hydraulic test tank Download PDFInfo
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- CN102494920A CN102494920A CN2011103680709A CN201110368070A CN102494920A CN 102494920 A CN102494920 A CN 102494920A CN 2011103680709 A CN2011103680709 A CN 2011103680709A CN 201110368070 A CN201110368070 A CN 201110368070A CN 102494920 A CN102494920 A CN 102494920A
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Abstract
The invention discloses a method and device for acquiring the deposition layer section of a hydraulic test tank. The method comprises: after finishing a hydraulic deposition test, using a liquid nitrogen freezing method to freeze a section to be tested, and freezing the water and underwater deposit of the section to be tested into ice cubes together so as to solidify the sample, and then taking out the solidified section sample. The device for realizing the method is composed of a water tank, separation boards, an inner cooling pipe, an outer cooling pipe, a thermal insulation layer, and a liquid nitrogen bottle. Two separation boards are respectively disposed at the upstream and downstream of the sample section. The inner cooling pipe and the outer cooling pipe are respectively positioned inside and outside the water tank. Suspended at the mouth of the water tank, the inner cooling pipe is about 20-40mm from the sidewalls and the bottom deposition layer surface of the water tank, while the outer cooling pipe is close to the outer walls of the water tank. The method and device of the invention solves the difficult problems of accurate sampling and measuring in experimental research of the deposition, transfer and conversion rules of silt, organic matters, heavy metals and other pollutants in rivers, lakes and oceans, thus being suitable for research of multilayer deposits.
Description
Technical field
The invention belongs to sedimentation in the hydraulics test tank, pollutants transfer and Study on Transformation field, be specifically related to a kind of method of sampling and device of sedimentary deposit section.
Background technology
The surface soil runoff washes away, field irrigation, industrial sewage and sanitary sewage discharging all be that a large amount of silts and pollutant have been brought in rivers, lake and ocean, and these silts are carrying out constantly dashing silt in being transferred process, changing riverbed, lakebed and seabed.Also carrying organic matter, heavy metal and other pollutant in nature, industrial and agricultural production and the sanitary sewage simultaneously secretly, assembling and migration with accumulating over a long period.Formation, distribution and paralic environment to submarine oil all have close influence.In order to study these depositions, migration and explanation rule, people's design-build the hydraulics test tank of various scales, carry out a large amount of correlative studys.Simultaneously, also utilize computer numerical simulation calculation technology, to sediment in the water body with wherein deposition, migration and the transformation rule of pollutant have carried out a lot of numerical experiments.
In these researchs, because the sediment water cut is big, mobile strong, is subject to measure interference and waits influence, never have desirable sampling and detection method.
Summary of the invention
For an accurate sampling in the deposition, migration and the transformation rule experimental study that solve silt, organic matter, heavy metal and other pollutant in river, lake and the ocean and a measurement difficult problem, the invention provides a kind of device of gathering method with this method of realization of hydraulics test tank sedimentary deposit section.
The present invention gathers the method for hydraulics test tank sedimentary deposit section, and its step is following:
(1) carries out the hydraulics deposition test;
(2) after above-mentioned hydraulics deposition test is accomplished, it is freezing to adopt freezing that section to be measured is carried out, and the water and the underwater sediment(s) of section to be measured is frozen into ice cube in the lump, makes sample solidifies;
(3) sample after taking-up is solidified needs according to research, cuts, polishes, takes pictures, measures and sample.
The preferred liquid nitrogen freezing of freezing in the said step (2).
Realize the device of above-mentioned collection hydraulics test tank sedimentary deposit section method, form that said dividing plate has two by tank, dividing plate, inner cool tube, external cooling pipe, heat-insulation layer and liquid nitrogen bottle; Be separately positioned on sampling position, section upstream and downstream; Inner cool tube and external cooling pipe are set respectively inside and outside tank, and said inner cool tube is unsettled to be hung on the mouth of tank, apart from tank sidewall and bottom deposit aspect 20～40mm; Said external cooling pipe is pressed close to the outer wall of tank, and dismountable heat-insulation layer is set outside it.
The plastic foam plate of said dividing plate for not absorbing water.
The external cooling pipe is copper pipe in said.
Said external cooling pipe and inner cool tube can many parallel connections.
Sedimentary deposit slowly flows between pool period in order to avoid, and respectively places a light plastic dividing plate in the upstream and downstream of section to be measured, blocks and holds current, the variation thereby the restriction sedimentary deposit flows.This dividing plate plays heat-blocking action simultaneously, reduces liquid nitrogen consumption; After accomplishing quick-frozen, section to be measured and upstream and downstream are separated from the lightweight plastic septum.
Liquid nitrogen and inside and outside freeze pipe mainly are to utilize the physical action of liquid nitrogen in a large amount of heat absorptions of gasification, with water and the together freezing curing of sediment, utilize and freeze the inner cool tube in sample, from tank, take out the section sample, so that follow-up study.
The present invention can solve the accurate sampling in the research of hydraulics deposition test and measure a difficult problem, is fit to carry out the sedimental research of multilayer.
Description of drawings
Fig. 1 is the schematic cross-section of apparatus of the present invention.
Fig. 2 is the schematic top plan view of apparatus of the present invention.
1. tanks among the figure, 2. current, 3. sediment, 4. dividing plate, 5. inner cool tube, 6. external cooling pipe, 7. heat-insulation layer, 8. liquid nitrogen bottle.
Embodiment
Below in conjunction with accompanying drawing the present invention is further described.
As depicted in figs. 1 and 2, gather the device of hydraulics test tank sedimentary deposit section and form by tank 1, dividing plate 4, inner cool tube 5, external cooling pipe 6, heat-insulation layer 7 and liquid nitrogen bottle 8; Dividing plate 4 has two; Be separately positioned on sampling position, section upstream and downstream; Inner cool tube 5 and external cooling pipe 6 are set respectively inside and outside tank 1, and inner cool tube 5 is unsettled to be hung on the mouth of tank 1, apart from tank 1 sidewall and bottom deposit aspect 20～40mm; External cooling pipe 6 is pressed close to the outer wall of tank 1, and dismountable heat-insulation layer 7 is set outside it.
Below in conjunction with embodiment the present invention is made further detailed description.
The disclosed freezing method of sampling of a kind of experimental tank section of the present invention and device are that basis designs sediment section research needs, and according to the aforementioned techniques scheme, its main implementation step is following:
Step 1, tank are made
Main combine concrete research need carry out Section Design, material adopts steel plate as far as possible, so that heat conduction and the receiving waters differential expansion stress after icing.
Dividing plate should be selected the plastic foam plate that do not absorb water, and disposable use is inserted in the tank before freezing gently, avoids disturbance subaqueous deposit layer as far as possible.After accomplishing the freezing curing of section, be convenient to separate with sampling section upstream and downstream current.
Interior external cooling pipe preferentially adopts copper pipe, presses the sink size simmering and bending in advance.Inner cool tube will leave tank sidewall and deposition aspect 20～40mm, and the external cooling pipe can be pressed close to sink outer walls.To put into inner cool tube gently before freezing, and want unsettled hanging on the tank mouth, in order to avoid the disturbance sedimentary deposit.When section appearance piece to be measured is longer, can adopt many parallel connections.
The available pipe clamp of external cooling pipe is fixed on sink outer walls, and long-term the use in case of necessity can many parallel connections.Be arranged at the outer heat-insulation layer of external cooling pipe and will adopt removable material, after the freezing completion, in time remove heat-insulation layer, being beneficial to section body to be measured can slightly melt the demoulding with the tank surface of contact.
After above-mentioned steps is accomplished, can open liquid nitrogen bottle, external cooling pipe in slowly alternately liquid nitrogen being poured into, when freeze pipe for a long time, can how to fall simultaneously with several liquid nitrogen bottles, after the water surface freezes, continue again more than 10 minutes.Operating personnel will dress protective clothing and gloves, in order to avoid frostbite will keep room ventilation in order to avoid anoxia asphyxia simultaneously.
Lay down the outer heat-insulation layer of tank earlier, let the tank appropriateness thaw,, continue to drip liquid nitrogen in the section surface simultaneously according to the environment temperature height.Remove upstream and downstream ice slag in the tank, after the ability front and back promote the section body, can take out, carry out necessary cutting, polish, take pictures, measure and sample.
Claims (6)
1. method of gathering hydraulics test tank sedimentary deposit section is characterized in that this method may further comprise the steps:
(1) carries out the hydraulics deposition test;
(2) after above-mentioned hydraulics deposition test is accomplished, it is freezing to adopt freezing that section to be measured is carried out, and the water and the underwater sediment(s) of section to be measured is frozen into ice cube in the lump, makes sample solidifies;
(3) sample after taking-up is solidified needs according to research, cuts, polishes, takes pictures, measures and sample.
2. the method for collection hydraulics test tank sedimentary deposit section as claimed in claim 1 is characterized in that the freezing in the said step (2) is a liquid nitrogen freezing.
3. device of realizing the said collection hydraulics test of claim 2 tank sedimentary deposit section method; It is characterized in that this device is made up of tank [1], dividing plate [4], inner cool tube [5], external cooling pipe [6] and liquid nitrogen bottle [8], said dividing plate [4] has two; Be separately positioned on sampling position, section upstream and downstream; Inner cool tube [5] and external cooling pipe [6] are set respectively inside and outside tank [1], and said inner cool tube [5] is unsettled to be hung on the mouth of tank [1], apart from tank [1] sidewall and bottom deposit aspect 20～40mm; Said external cooling pipe [6] is pressed close to the outer wall of tank [1], its outer dismountable heat-insulation layer [7] that is provided with.
4. like the device of the said realization collection of claim 3 hydraulics test tank sedimentary deposit section method, it is characterized in that the plastic foam plate of said dividing plate [4] for not absorbing water.
5. like the device of the said realization collection of claim 3 hydraulics test tank sedimentary deposit section method, it is characterized in that said inner cool tube [5] and external cooling pipe [6] are copper pipe.
6. like the device of the described arbitrary realization collection hydraulics test tank sedimentary deposit section method of claim 3 to 5, it is characterized in that said external cooling pipe [6] and inner cool tube [5] can many parallel connections.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110368070 CN102494920B (en) | 2011-11-18 | 2011-11-18 | Method and device for acquiring deposition layer section of hydraulic test tank |
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201110368070 CN102494920B (en) | 2011-11-18 | 2011-11-18 | Method and device for acquiring deposition layer section of hydraulic test tank |
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| CN102494920A true CN102494920A (en) | 2012-06-13 |
| CN102494920B CN102494920B (en) | 2013-06-12 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103954485A (en) * | 2014-04-17 | 2014-07-30 | 华北水利水电大学 | Method for making experimental cylindrical ice sample |
| CN105547780A (en) * | 2015-12-29 | 2016-05-04 | 温州大学 | Soil body one dimensional consolidation tester and test method thereof |
| CN106483251A (en) * | 2015-09-01 | 2017-03-08 | 中国科学院武汉岩土力学研究所 | The method and device of sedimentary section is gathered during a kind of mud deposition test |
| CN110208054A (en) * | 2019-05-30 | 2019-09-06 | 长江大学 | A kind of deposition simulated interior structure restoration methods |
| CN110954638A (en) * | 2019-11-25 | 2020-04-03 | 北京城市排水集团有限责任公司 | Method for judging stability of hydrogen sulfide content in excess sludge |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61251742A (en) * | 1985-04-30 | 1986-11-08 | Tokyo Soiru Res:Kk | Method for freezing and sampling soil quality sample in shallow layer |
| US4946650A (en) * | 1985-11-12 | 1990-08-07 | Roethele S | Apparatus for integrating sampling and in-line sample splitting of disperse products from transport conduits or at flow transfer points |
| CN101788442A (en) * | 2010-01-15 | 2010-07-28 | 重庆大学 | Ultra-low temperature freeze-thaw cycle test method of cement-based material |
-
2011
- 2011-11-18 CN CN 201110368070 patent/CN102494920B/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS61251742A (en) * | 1985-04-30 | 1986-11-08 | Tokyo Soiru Res:Kk | Method for freezing and sampling soil quality sample in shallow layer |
| US4946650A (en) * | 1985-11-12 | 1990-08-07 | Roethele S | Apparatus for integrating sampling and in-line sample splitting of disperse products from transport conduits or at flow transfer points |
| CN101788442A (en) * | 2010-01-15 | 2010-07-28 | 重庆大学 | Ultra-low temperature freeze-thaw cycle test method of cement-based material |
Non-Patent Citations (2)
| Title |
|---|
| G.E.PETTS等: "水系沉积物找金的冷冻采样法", 《黄金地质科技》 * |
| 李国民，等: "冰冻取样器的结构", 《探矿工程》 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103954485A (en) * | 2014-04-17 | 2014-07-30 | 华北水利水电大学 | Method for making experimental cylindrical ice sample |
| CN103954485B (en) * | 2014-04-17 | 2016-03-30 | 华北水利水电大学 | A kind of experiment right cylinder ice sample method for making |
| CN106483251A (en) * | 2015-09-01 | 2017-03-08 | 中国科学院武汉岩土力学研究所 | The method and device of sedimentary section is gathered during a kind of mud deposition test |
| CN105547780A (en) * | 2015-12-29 | 2016-05-04 | 温州大学 | Soil body one dimensional consolidation tester and test method thereof |
| CN105547780B (en) * | 2015-12-29 | 2019-02-19 | 温州大学 | Soil body one-dimensional consolidation experimental rig and its test method |
| CN110208054A (en) * | 2019-05-30 | 2019-09-06 | 长江大学 | A kind of deposition simulated interior structure restoration methods |
| CN110954638A (en) * | 2019-11-25 | 2020-04-03 | 北京城市排水集团有限责任公司 | Method for judging stability of hydrogen sulfide content in excess sludge |
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| CN102494920B (en) | 2013-06-12 |
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